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The detectives investigate a murderer who poisons hospital victims with cyanide. They suspect a nurse whose profile is typical, but when they discover more murders away from the hospital they have to widen their search.
First Air Date : Sep 30, 2001
Last Air date : Jun 26, 2011
Episode : 195 Episode
Season : 10 Season
Runtime: 42:14 minutes
Studio: NBC, USA Network
Country: United States of America